Choose MantisBT if you need
- Linux, Windows or macOS. We haven't found them on OpenProject's website.
At a glance
- OpenProject has a free plan. We haven't confirmed one for MantisBT.
- OpenProject's lowest paid plan is Basic at $7.25 per user per month, billed yearly, on-premises, as of October 23, 2026.
- Only MantisBT lists Linux, Windows and macOS.
- Only OpenProject lists Web and API.
- OpenProject lists GDPR and SSO. We haven't confirmed any of these for MantisBT.
- OpenProject has a public API. We haven't confirmed one for MantisBT.
- OpenProject can be self-hosted. We haven't confirmed that for MantisBT.
From each tool's own website, checked on the dates below, and from published reviews.
Which to choose
From the facts checked for both tools, not from opinion. A fact we haven't confirmed for one of them is never counted.
Choose OpenProject if you need
- Web or API. We haven't found them on MantisBT's website.
MantisBT
Nobody has reviewed MantisBT yet. Its rating shows once it has 3 reviews.
Review MantisBT
OpenProject
Nobody has reviewed OpenProject yet. Its rating shows once it has 3 reviews.
Review OpenProjectThe facts
- What it does
- MantisBTMantisBT is an open source issue tracker that provides a delicate balance between simplicity and power.
- OpenProjectOpen source software for classic, agile or hybrid project management in a secure environment
- Free plan
- MantisBTNot confirmed
- OpenProjectYes
- Pricing
- MantisBTNot confirmed
- OpenProjectPer user, monthly
- Paid plans from
What they share
From the platforms and integrations each website lists.
Platforms
BothNone in common
Only MantisBT
- Linux
- Windows
- macOS
Only OpenProject
- Web
- API
People who switched
Reviewers who say they used one of these before the other.
No reviewer has said they moved between MantisBT and OpenProject yet.
Used either of them?
Your review makes this comparison better for the next person. Review MantisBT or review OpenProject.